Organic light-emitting display panel, manufacturing method thereof, and organic light-emitting display device

An organic light-emitting display device, comprising an organic light-emitting display panel, wherein the organic light-emitting display panel comprises:

• an array substrate;
• a plurality of pixel driving circuits disposed on the array substrate;
• a planarization layer disposed on the array substrate, wherein a plurality of connection holes corresponding to the plurality of pixel driving circuits is provided in the planarization layer;
• a pixel defining layer disposed on the planarization layer, wherein the pixel defining layer comprises a plurality of pixel apertures;
• and
• a plurality of organic light-emitting devices, wherein at least two organic light-emitting devices of the plurality of organic light-emitting devices for emitting a same color are disposed in each of the plurality of pixel apertures, each of the plurality of organic light-emitting devices comprises an anode and at least one organic light-emitting function layer, and anodes of the plurality of organic light-emitting devices are electrically connected to the plurality of pixel driving circuits through the plurality of connection holes in one-to-one correspondence,
• wherein a plurality of grooves is provided in the planarization layer, wherein one groove of the plurality of grooves is disposed between two adjacent organic light-emitting devices of the plurality of organic light-emitting devices disposed in a respective one of the plurality of the pixel apertures;
• the plurality of grooves is filled with a hydrophobic layer having a trench, an extending direction of the trench in each groove of the plurality of grooves is the same as an extending direction of said groove.

A manufacturing method for an organic light-emitting display panel, comprising:

• providing an array substrate on which a plurality of pixel driving circuits is provided;
• forming a planarization layer on the array substrate;
• forming, in the planarization layer, a plurality of connection holes corresponding to the plurality of pixel driving circuits;
• forming a plurality of grooves in the planarization layer;
• filling each of the plurality of grooves with a hydrophobic material to form a hydrophobic layer;
• forming a trench in the hydrophobic layer;
• forming a plurality of anodes included by a plurality of organic light-emitting devices, wherein the plurality of anodes is electrically connected to the plurality of pixel driving circuits through the plurality of connection holes in one-to-one correspondence;
• forming a pixel defining layer on the array substrate having the plurality of anodes, wherein the pixel defining layer comprises a plurality of pixel apertures, and each of the plurality of pixel apertures corresponds to at least two of the plurality of organic light-emitting devices;
• and
• forming at least one organic light-emitting function layer of each of the plurality of organic light-emitting devices by means of ink-jet printing,
• wherein at least two of the plurality of organic light-emitting devices for emitting a same color are disposed in each of the plurality of pixel apertures, and wherein one of the plurality of grooves is disposed between two adjacent organic light-emitting devices of the plurality of organic light-emitting devices disposed in a respective one of the plurality of the pixel apertures, and an extending direction of the trench in each groove of the plurality of grooves is the same as an extending direction of said groove.